Starting device for explosive-engines



J. ZAGORA. STARTING DEVICE FOR EXPLOSIVE ENGINES,

APPLICATION FILED MAR. 7,- 1908.

IN V EiIV TOR. y W/L A TTORNE Y.

Patented May 4, 1909.

JOSEPH'ZAGORA, OF CHICAGO, ILLINOIS. I

STARTING DEVICE FOR 'EXPLOSIVE-ENGINES Specification of Letters Patent.

- Application filed March 7, 1908. Serial N 0. 419,667.

To all whom it may concern."

zen ofthe United States, and residing at Chicago, in the county of Cook and State of Illinois, have invented a new and useful Improvementin Starting Devices for ExplosiveeEngines', of which the following 1s a complete specification.

I'll star-ting devices forexplosive engines and more particularly to a-starting device of that class adapted to deliver the initial charge of the explosive mixture to the cylinder independentl of the piston action.

-.'One 0 the objects of this invention is to provide a device particularly adapted for use,

leaving his seat.

whic mayhie of an the oil chamber" into the above the same are pipes D'and D opening.

with explosive engines for motor vehicles and by means of which the engine may be started without necessitating the operator It is a further object of the invention to provide a device by means of which the intake and exhaust valves of the cylinder or cylinders which it is desired to charge may be manually opened during the priming operation and then closed to confine the mixture in the cylinder ready for the spark.

Another'object of the invention is to pro vlde a device'by means of which air may be forced through the carburetor of a gasolene or oil engine, or past 'the gas inletof a gas engine, and convey the explosive fluid tothe cylinder while-the engine piston is at rest,

On thedravvims: Figure 1.is a sectional, side elevation of an explosive engine provided with a starting device embodying my invention. Fig.2 is a vertical, transverse Fig-'3 is a fragmentary valve shaft and pair of tudinal'section of the cams. elevation 'oflthe cam.

As shown in s'aiddra'wings: A indicates the crank case and B, B, B a ders of a multiple-cylinder.explosive. engine, though the starting-device is e ally adapt- Fig. 5 is an end able for use a single'cylin er engine it preferred.)

upported adj acentithe engine in any referre .-'m'annerf is the carbureter C,- ferred' construction, 'oil'chamber and an air chamber indicated byjb'an'd 6 8 and is provlded tively. "Anoil-loijlvaporjoutlet.c opens om airfchamber', and

I from the air chamber Be it known that I, JOSEPH ZAGORA, a citis invention relates to improvements in be 0 ened by the on t nd B the cylinto theiintake chambers b of said cylinders. Controlling theassages from theintake chambers b to the i ct orts bb of said cylinders are the valves and E, and controlling the outlet orts I) otfsaid cylinders are the exhaustva ves F-and E.

which open into the exhaust chambers ff rate'nted may 4,1909. I

.adapted to carry off the A. coiled I valves in closed-position, iscarried oneach stem and engages at one end againstthe A intake or exhaust-'chamben; as the caseniay .be, and at its lower end engages. againsta.

cross pin f carried on the stem. Ava-Ive actuating shaft G is .journaled in suitable bearings in said crank-case and is provided on one-end with a. car which. is splined thereon to ermit t es aft-to be moved longitudinali y inits bearings. Said shaft G isdr iven from the crank shaft lrlby means of a gear, not shown, adapted tolmesh-with the gearg. .On said shaft G, are a plurality-of cams 9 adapted when the shaft is inoperative osition to engage the rollers f hand-as the s aft is rotated to operaterthevalves'. Adjacent each canrg. is a cam g -adapted, when the shaft is moved longitudinally, to 0 on the valves of those, cylinders in which t e pistons are in power and compression positions, and for this purpose, where a multiple cylinder engine is used, said cams g are so arranged with respect to the cams 9 that whenthe pistons in two of thecylinders, as for instance Band B, are'stoppedinpoWer and compression ositions their valves will itudinal movement of the s aft, and when cylinders are in exhaust and suction positionsrespectively their valves will be asjshown more clearly in Fig. 1. Any preferred means may be employed to move said shaft longitudinally when it is desired to startthe engine, but as shown, a lever I is pivoted on a suitable support t adjacent the engine, and is provided with a pin '5 which engages in a grooved pulley I on the end of said shaft and acts to move the shaft longitudinally when'the lever is operated, am a spring 13', engaged to the lever and to the cybe pistons in the other closed, 1

inder B, acts to normally hold the shaft at the inner limit of its movement, with the cams g in engagement with the rollers f Any preferred means may be employed to force a mixture of air and explosive fluid under pressure into the cylinders which are to receive the charge, but as shown an air pump J islsu ported adjacent the carbureter and 1s provi ed with an outlet j projecting into the air chamber -An outlet valve j controls said outlet and an inlet valve'j admits airto the pump. The piston J is provided with a rod 3' having a handle y" at its outer end in easy access to the operator.

The operation is as follows: When it is desired to start the engine the valve shaft'is moved longitudinally to bring the cams-g beneath the rollers f thereby opening the Valves of the cylinders whose pistons are in power and com ression positions and closing the valves of t 1e remaining cylinders. The pump is then operated thereby forcing a mixture of air 2111C the explosive fluid into the open cylinders and forcing out any products of combustion that may have remained thereii-i. placed. in the cylinders the valve shaft is re turned to operative position thereby closing said valves and the charge is ignited by any desired means, as by the manual operation of the sparking device K.

Obviously the device may be used with gas engines also and many details of construction may be varied without departing from the principles of my invention.

I claim as my invention:

1. In device of the class described the combination with a plurality of cylinders each provided with an inlet and an exhaust port, of a carbureter having anair chamber therein, pipes leading from said air chamber to said inlet ports, a valve for each port, a

When a suflicient charge has been valve stem on each valve, a longitudinally movable, rotative shaft adjacent said stems,

cams thereon adapted to normally operate means for moving said shaft longitudinally,

and means adapted to force air into said air chamber and carry/explosive mixture into the ports when held 0 en by said cams.

2. In a device of the-c ass described the combination with a crank case of a plurality of cylinders thereon, a piston in'each cylinder, an inlet and an exhaust port for each cylinder, a valve for each-port, a stem on each valve extending into said case, a roller on each stem, a rotative shaft journaled in said case adjacent said rollers, cams on said shaft adapted to. engage said rollers and operate said valves in succession when the s aft is rotated, a cam adjacent each of the aforesaid cams, each arranged to open or scribed my name in the presence of two witllGSSGS.

JOSEPH ZAGORA.

Witnesses ltosr. Krorz, JoI-IN WEieLEs. 

